two year old gifts?

so my twins' 2nd bday is coming up (can't believe it's going so fast!) and friends and family are asking what they can get for our little ones, a boy and a girl. my group of work friends usually pitch in for one big gift (around $100, total) for each others' kids, so now it's our turn, and i don't know what to ask for. and family members are asking what the twins need/want. i was thinking the radio flyer tricycle, but other than that i have no clue.www.studyladder.org
does anyone have any recommendations for a neat trike or any other big(ish) ticket item that your little ones are, or were, into? thanks in advance!